Improvement in lanterns



J. H. IRWIN- La-ntarn.

" N0. 211,405. Patented'1an. 14,1879.

NI'IE'D S'I'A'I'ES PATENT OFFICE.

JOHN H. IRWIN, OF IHILADELPHIA, PENNSYLVANIA.

IMPROVEM ENT IN LANTERNS.

Speoification forming Part of Letters Patent N0. 211,405, dated January 14, 1879; application filed November 2.9, 1878.

T0 all whom z 't may concern Be it known that I, JOHN H. IRWIN, of Philadelphia, in the county 0f Philadelphia and State of Penusylvania,have iuvented a new and useful Improvement in Lantems, of whiol1 the following is a full and exact description.

This invention relates to that dass of lanterns generally known as tubular lanterns, 4 and the object of the present improvement is prinoipally to combine with the air-conduet ing tubes atmospherio inj ectors and ejectors in a oertaiu definite relation, whereby the structure is oheapened, and aocess of water when exposed to rain, &o., is prevented.

'Ihis improvement more especially relates to the lautem for which Letters Patent N0. 205,7 49 were granted to me July 9, 187 8,wherein atmospherie injeotors are inserted in the airtubes between their upper and lower ends.

The structure represented in said patent is found to be objeetionable for some purposes, because rain will sometimes gaiu admission to the air-tubes through the injeotors placed witl1 their axes more or less nearly approaching the vertical.

That others may fully understand my improvement, I will particularly deseribe it, havin g referenee to the aecompauying drawings, whereiu I igure 1 is a vertical seetional elevatiou of 1ny lautem. Fig. 2 is a similar section, showing a modifieation of the injeetor.

This lautem is provided With a base cout-aining an oil-cup, A, and an air-ohamber, B, above it, and a immer, O, as usual. It has also a top composed of a metallio band, D, With its upper edge iuelined or sloped inward, and. a cap, E, correspondingly shaped and supported upon the band D by the lege e.

Intervening betweeu the band D and the bumer O there is a glass proteetor, F, to prevent Wind 01 air ourrents fro1n blowing upou and disturbing the fiame. 'lhe bottom of the proteotor rests upon a plate, G, whioh in turu rests upon the shoulder of the burner-cone, and keeps the same in plaoe.

The plate G is provided with perforations to admit air to the interior of the globe while the lautem is ab rest, and to permit the escape of air therefroui when the lautem is swung or osoillated by the bail as it is earried in the band.

Tl1e band D is oylindrioalaud is suffioiently wide to perrnit the protecton I, whioh may be also cylindrieal ab its top, to slide up therein, so as to admit the easy removal of the plate G and burner O, o1 to permit the iusertiou of a mateh or other lighter for the ignition of the wiok.

When the plate G has beeu renuoved the proteetor itself may descend far enougl1 to free its top from the bandD, and thereby be itself removed.

A set-sorew, spring-oatoh, or other oonvenient devioe may be employed to prevent acoidental displacement of the glass proteotor, as shown at s, Fig. l.

Air to feed the flame is drawn into the airchamber through the tubes H, which are counected at their top With the spaee Withiu the band D, so that a part of the warm air withiu that spaoe may pass iuto said tube s and descend to the burner in acoordanoe with a law well uuderstood; but sometimes this supply will be iusufficient, and it is required to iuject additional air from without. (Ehe injeotors I are therefore placed in the tubes H direotly against the side of the band D, so that the axis' of the injeotor is horizontal, and its separate plates are therefore arrauged in vertieal planes, and drops of water fron1 raiu, &e. will pass 01' drip direotly through, entering at one side and esoaping at the otl1er, instead of eutering the tubes and drippihg into the airchamber. I thus seeure the desired effect of i'njeeting air at the proper time without the disadvantage of a looatiou forthem which will admit water. Tl1e rinne of the deflectiug-plates necessarily projeot beyond the surfaee of the air tube, and therefore wheu these plates are placed olose to the side of the band D, ae showu, tl1ey are less exposed 130 blows and injuries while the lautem is in use thau wheu plaoed at any other point.

The band D and cap E, being shaped and loeat-ed as desoribed, will so direet ourrents of air moving laterally as to the lautem as to cause them to follow the track iudicated by the long arrow, and they tl1eu tend t o exhaust 0r ejeot air from the interior of the lautem,

and this exhaustion has an efieot to draw air away from the flamme and cause imperfect 00mbustion and smoke.

In addition to the above advantages as to position an l location obere is the additional advantage of cheapness. lt costs less to coustrucb the tube H in one section than in tw0.

The bail may be attached in the manner shown 01' otherwise, as desired.

H2Wing described my invention, whatIolaim as new, and desire to secure by Letters Patent, iS-

Tl1e tubular lauter-n, substantially as described, provided with atmospheric inj ectors placed against the side 0f the band l), wilzh their axes horizontal and discharging air into the feeding-tubes H, as sei: forth.

JOHN H. IRWVIN.

Witnesses:

R. D. O. SMITH, UHAS. F. R. HEUCKEROTH. 

